Global Patent Index - EP 3694066 A4

EP 3694066 A4 20210428 - ARC PROTECTION DEVICE AND OPERATING METHOD THEREOF

Title (en)

ARC PROTECTION DEVICE AND OPERATING METHOD THEREOF

Title (de)

LICHTBOGENSCHUTZVORRICHTUNG UND BETRIEBSVERFAHREN DAFÜR

Title (fr)

DISPOSITIF DE PROTECTION CONTRE LA FORMATION D'ÉTINCELLES ET PROCÉDÉ DE FONCTIONNEMENT

Publication

EP 3694066 A4 20210428 (EN)

Application

EP 17927944 A 20171005

Priority

RU 2017000741 W 20171005

Abstract (en)

[origin: EP3694066A1] The present invention relates to methods and devices for detecting and protecting against arcing in electrical networks and electrical installations. An operating method of a device for protecting against arcing in a protected circuit includes measuring, in each voltage half-cycle, current signals in a high-frequency band, current signals in a mid-frequency band, voltage signals in a low-frequency band, and voltage signals in a mid-frequency band. On the basis of the measured signals, the presence of an isolated arc in each voltage half-cycle is determined, information about isolated arcs is gathered over a set time period, and said information is stored in the form of an arc parameter. When the arc parameter reaches a set value, an arc is registered and a signal to disconnect the protected circuit from the network is generated. A device (1) for protecting against arcing in a circuit comprises a voltage reading unit (2), a current sensor (3), a high-frequency current signal detecting unit (4), a mid-frequency current signal detecting unit (5), a microcontroller (6), a power unit (7), and a disconnection member (8). The technical result of the invention is an increase in the accuracy with which an arc event is determined, a reduction in the number of false activations of an arc protection device, and an increase in the working range, the number of electrical appliances connected, the length of the protected circuit and the number of branches it contains.

IPC 8 full level

G01R 31/52 (2020.01); G01R 31/50 (2020.01); H02H 1/00 (2006.01); H02H 3/52 (2006.01)

CPC (source: EP US)

G01R 31/52 (2020.01 - EP US); H02H 1/0015 (2013.01 - EP); H02H 3/52 (2013.01 - EP)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

EP 3694066 A1 20200812; EP 3694066 A4 20210428; CN 111433990 A 20200717; CN 111433990 B 20220607; WO 2019070147 A1 20190411

DOCDB simple family (application)

EP 17927944 A 20171005; CN 201780097427 A 20171005; RU 2017000741 W 20171005